vfio/mlx5: Let firmware knows upon leaving PRE_COPY back to RUNNING

Let firmware knows upon leaving PRE_COPY back to RUNNING as of some
error in the target/migration cancellation.

This will let firmware cleaning its internal resources that were turned
on upon PRE_COPY.

The flow is based on the device specification in this area.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Leon Romanovsky <leon@kernel.org>
Link: https://lore.kernel.org/r/20240205124828.232701-6-yishaih@nvidia.com


Signed-off-by: Alex Williamson <alex.williamson@redhat.com>